One day, the escort girl I called to my house turned out to be Momona Koibuchi, the same company's accountant! The serious and strict Koibuchi, who always returns suspicious receipts, comes to my house as an escort girl named "Momo," and I manage to get her to have raw sex with me as hush money... After that, our relationship develops into a convenient one where she also takes care of me at work and outside of it.